问题补充：
单选题Thenumberofvariouseducationalprogramsisincreasingimportantroleshavebeenrecognizedbymoreandmorepeople.A.whoseB.whereC.whichD.that
答案：
A解析考查定语从句。先行词是educational programs，代入定从———— important roles have been recognized by more and more people.作定语修饰roles 。所以选A.
